Apparatus for forming articles



May 28, 1935. K. F. MOLLER APPARATUS FOR FORMING ARTICLES Filed Oct. 28, 1932 5 Sheets-Sheet l May 28, 1935. K. F. MOLLER 2,002,705

APPARATUS FOR FORMING ARTICLES Filed Oct. 28, 1932 3 Sheets-Sheet 2 ATTORNEY May 28, 1935.

K. F. MOLLER 2,002,705 APPARATUS FOR FORMING ARTICLES Filed Oct. 28, 1932 3 Sheets-Sheet 3 I ATTORNEY Patented May 28, 1935 slide of the'machine, and movable'thereby' longi-.

Kasper Moller,

Electric Comp ny,

Cicero, 111., assignor' to Western".

Incorporated, New York,

N. Y., a corporation of New York Application October 28,

. lfi Claims 'I'his-inv ention relates to apparatus for forming articles; and more particularly to automatic screw machines. An object of the invention is to provide an improved article forming apparatus whereby articles of uniform contour and dimensions may be producede'fiiciently in large quantities, and with a minimum amountof manual effort. V

In accordancewith one embodiment of this invention as applied to the production of highly accurate contours, a conventional multiple spindleautomatic. screw machine is provided with a profiling attachment mounted on the usual tool tudinally of the rotating work atone of the positions of the work holding'spindles. The'profiling attachment includes a cutting or profiling tool mounted for movement radially of the work by means of a. rotatable cam coaxial with the work,

the cam being rotated through the reciprocable movement of the tool slide. Means is provided whereby the profiling tool .is accurately selfcentered with respect tothe work at all'times, regardless of the. usual slight variations in the positions ofthe axes of the several-work holding spindles'When at the working position of the profiling attachment. Means is also provided for with drawing the profiling tool radially'away from the work upon the completion of the profiling operation to, prevent marring the finished work during thelongitudinal return mo vement of the tool.v An automatic stop mechanism is provided which .comprisesa gauge or pivoted memberpositioned to be actuated bygoversize or defective parts while being indexed to the profiling position, the actuationof the pivoted member serving to stop the machine, thereby preventing further operations on defective parts and eliminating tool breakages.

Other features and advantages of this invention will more fully appear from the following de-. tailedv description taken in connection ,withjthe accompanying, drawings, wherein Fig. 1 is an elevational view of the forward end of a profiling tool embodying the features of this T1 invention shown applied to the tool slide of an automaticscrew machine;

Fig; 2. is a planfsection takenon the line 2-2 of Fig. 1, showing iragmentarily one of the work holdingspindles of a conventional multiple spindleautomatic screwimachine, the profiling tool being shown in an intermediate positioniin its.

forward working stroke;

Fig.3.is. a fragmentary sectional view of a portion of the structure shown in Fig. 2 showing the position-of the tool withdrawing means relative to the tool slides at the end of the forward working stroke of the tool;

Fig lis a fragmentary sectional view similar to'fig; 3, but showing the positionof the 'tool" 1932, Serial No. 640,043 (ores-57) withdrawing means relative to the tool slides during the return'or idle movement of the tooljfl Fig. 5 is avertical section taken-on the line 5-1 of Fig. 2 looking at the rear end of the attachment;

Fig. 6 is a fragmentary side view of the auto matic stop mechanism: j V V Fig. 7 is a vertical section on an enlarged scale taken on the line 1-1 of Fig.6, showingtheposl tion of thestop mechanism gauge in the line of travel of the articles while being' indexed to the profiling position, and

Fig. 8 is a vertical detail section taken on'the' line 8--8 of Fig. 7.

The invention is herein illustrated and dcscribed as applied to a conventional multiple spin dle screw machine, and more particularlyto 'a novel adaptation of such'a machine to the auto matic forming and/ or profilingof articles'requiring accurate contours and highlyfinished surfaces, such as switchboard plugs. It 'shouldlse understood, however, that the novelfeatures'joi the invention are capable of numerous otherap plications:

Referringnow to the drawings, and more par; ticularly toFigs; l to 5, inclusive, it will be "ob served that the numeral I0 designates a portion of the rotatable spindle head of a conventional multi-spindle screw machine. A plurality of equally spaced work holding spindles II are rotatablycarried in the head I0,-each spindle ter minating in a chuck l2 designed to receive and securely clamp therein one end' of a partially formed switchboard plug 14. A- portionof the usual tool carrying slide employedfin screw ma chines of this type is designated by the numeral il; By mechanism 'well*known' in the' artl'the' tool carrying slide is periodically advanced'to-' ward the work holding spindles and in timed relation with respect to the intermittent indexing, of the" spindlesto successive positions; Also, at one of the positions of the spindles, the partially formed plugs or otherbl'anksto be formedare loaded into" the spindle chucks either manually or automatically from a magazine, and the com-f; pletely formed plugs are ejected from thespindle" chucks automatically, all in 'a'manner well known in the art' and constituting nopart of the present invention.

A profiling attachment I9'is mounted upon the tool slide H 'by means of a bracket i8jattache'd to the slide. This profiling attachment" is in'the formof a box tool comprising'a cylindrical? liousing 20 supported at its right 'endin the bracket i8 bya universal joint 2| (Figs;2 and 5). universal joint includesfour shoes 22'havin'g arcuate inner faces conforming .to similar races formedon the outer peripheral surface of the housing 20," the" shoes being held in position by" set screws 23" threaded into a ring-likdportioii I nal or torsional movement relative to the bracket 24 of the bracket I8 which surrounds the housing 20, the set screws engaging depressions in the shoes. At its left end the housing 2! is also surrounded by'a ring-like portion 25 of the bracket l8, the inner diameter of this ring-like portion being larger than the outer diameter of the housing to provide a suitable clearance therebetween. It is to be understood that the ring-like portions 24 and 25 of the bracket l8 are integrally united by a flat interconnecting portion 25, the inner face of which is indicated in dotted lines in Figs. 1 and 5, the outer face of the portion 28 abutting the tool slide I1.

Threaded into the ring-like portion 25 and spaced 120 apart are three bushings 21 housing springs'28, one of which is shown in detail in Fig. 2, the springs'at their inner ends engaging the peripheral surface of the housing 20. The tension ofthe springs 28 in the two upper bushings 21, as viewed in Fig. 1, are adjustable by means of screws 29, as shown in detail in Fig. 2, and thesesprings normally tend to cause the housing 20 to rest against the inner end of the third bushing '21; which may be suitably adjusted by turning it in or out in the bracket 58 to limit the movement of the housing 20 at its left end toward the inner peripheral surface of the bracket 18... 1

The design of the universal joint 2! is such that the housing 2!] is prevented from longitudil8, yet can float at one end within the space between the housing and bracket limited by the adjustment of the screws 29 and the associated springs 28 and the third bushing 21 and its associated spring.

.Adjustably carried at the forward end of the housing 20 is a V-grooved steady rest 3| adapted to slidably engage the straight cylindrical portion 4| of the plugs under the pressure of the springs -28 to thereby accurately position the forming tools with respect to the work, regardless of the usual slight variations in the positions of the axes of the plugs when at the working position ofthe forming tools. By adjusting the tensionof the springs 28 by means of the screws 29 thepressure of the steady rest 3! on the plug I 4 may be varied to an amount just sufiicient to insure the engagement of the steady rest with the blue at an times.

' Theforming tools '32 and 33, in the present '1 is mounted is provided with an adjustable stop 43 comprising a screw threaded into one end of the slide and extending freely through an aperture of an end plate 46 fixed to the housing 23 and spaced from the slides, the outer end of the 'screw carrying a pair of adjusting nuts. Surrounding the screw of the adjustable stop 43 with opposite ends abutting the plate 48 and the tooljslide 35 is a compression spring 41 which serves to hold the tool 32 in its operative position against the rotating plug l4 to finish the straight sleeve portion v ll thereof; the movement of the tool toward the plug and consequently the depth of the finishing operation thereon being limited by the adjustable nuts of the stop 43.

The diamond tool 33 is for finishing the peripheral surface of an irregular or profile portion 48 of the plug 14 and the slide 36 upon which it is mounted obtains a predetermined profiling movement from a rotary profiling cam 49 which peripherally engages a cam rider 50 fixed to the slide 36. The contour of the peripheral cam face of the cam 49 is shown in dotted outline in Fig. 1. The profiling cam 49 is mounted in the head of the housing 2E? and abuts an annular thrust bearing 51 (Fig. 2) formed integral with the housing and surrounding a hollow driving spindle 52 for the profiling cam. The cam rider is constantly urged into engagement with the peripheral cam face of the cam 49 during the profiling operation of the tool 33 on the plug I4 by a compression spring 53 positioned between the plate 46 and the tool slide 35.

The spindle 52 is journaled in the left end-of the housing 20 and at its outer end extends into the head portion 40 of the housing and to this end.

of the spindle is suitably fixed the profiling cam 49. Secured by a pin 55 to the inner end of the spindle 52 is a coarse threaded screw 56 formed with a central longitudinal bore 51. Engaging the screw 56 is a stationary nut 56 which fits the bore of the housing 20 and is prevented from turning therein by keys 6! (Fig. 5), the nut being rigidly secured to the stationary frame of the automatic screw machine by a rod 62, one end of which is pinned to the nut, as indicated at 63. The opposite end of the rod 62 extends through astationary lug 64 of the machine frame and is held rigid thereto after adjustment by nuts threaded onto the rod at opposite sides of the lug.

It will be apparent that during the forward working stroke of the box tool IS, the nut will be held stationary from longitudinal and rotary movement by the fixed rod 62 pinned thereto, the housing 28 of the box tool carried by the tool slide I1 will slidably move forward on the nut, and the profiling cam 49 will likewise be moved forward due to the thrust of the bearing 5! on the housing 29 thereagainst. The forward movement of the profiling cam 49 carries the attached. spindle 52 therewith and the spindle in turn draws the coarse threaded screw 56, which is fixed to the spindle, along the threaded interior of the nut 60 which causes the screw, spindle and profiling cam to rotate in the direction of the arrow (Fig. 1). Upon a retraction of the housing 20, the reverse movements of the moving parts occur.

During the forward working stroke of the box tool IS the forming tools 32 and 33 will operate on the straight sleeve portion 4| and the irregular or profile 48 of the rotating plug 14, respectively. As shown in Fig. 2, the box tool I9 has partly completed its forward working stroke and consequently the tools 32 and 33 are shown in operative relation with the rotating plug l 4, the tool 32 being held against the peripheral surface of the plug during its movement therealong' by the spring of the adjustable stop 43 and the tool 33 having imparted thereto a predetermined profiling motion during its movement along the plug from the rotary movement of the profiling cam 49, which engages the cam rider 50 connected to the tool slide 36. V

The unfinished outer end of the rotating plug I 4 (Fig. 2) is centrally supported during the operation of the tools 32 and 33 thereon by a spring pressed shouldered sleeve 61 reciprocably mounted in the bore of the hollow driving spindle 52. The forward end of the sleeve carries a nose piece 58 having its outer fiat end face provided Wil edenr ssieg ifit r rece vin the m he 15m th sbex p l '91s adv m dieih ai n'siiild ia l c t l a rtu e" .o th

sileeve "51} e thliforwdrd d or t e, rod V1! is i d" mbe 11 wh ch l d ufitseth equipped with ua transverse pin 1 5 projecting at iii e i n s J nt z l i 6 io medw en udi ll A compression spring 1] within 1 th sleeve 6] engaging at opposite ends nerfends of the slots l fi the arrangement being,

s ii that the nose piece 68 i s prevented from chuckof thetspindle head I 0,;thus damage tothe cutting; edge of the, diamond tool is prevented. .D r'ing therretraction or return stroke of thebox tool I9 after operating on a plug M an inner an nular shoulderedsurface 18 on the spindle 52 engages a sirnilar outer surface 19 on the sleeve fi'lltanfdin the continued movements of' the box toollf'the sleeve and its nose piece is moved inwiidlyfrelative tothe spindle SZ thereby removmy the nosepiece 6 8 from supporting relation with the plug so that the plug is free to be indexedto the next work-station by themovernent of ,thefspindle head 10. In the; next forward working strokeof the box tool 19 the shoulder 18 ondthespindleilirnoves away from the shoulder l9lon thesleeve 61 which permits the spring 11 topin'ove the sleeve and the noseipiece 68 forward relative to is movedinto operative supporting relation with mas er erid'ofthe plug i4 before the tools, 32 and 33 moving with the box tool engage the plug tool I continues its working stroke,

" ofth'ttools with the m1 slide 11. Means is therefore" provided for automatically withdrawing or releasingthetools 32fand 33 from engagement withfthehfinishe'd surfaces of the plug M at the endof, thelprofiling operation during the iorward working stroke v 33 and immediately upon the beginning of the return stroke in i the case of the sleeve finishing tool 32. I V a The means for releasing, the tools 32 and 33 referredto above comprises a shouldered generally cylindricalrod 82, (Figs. 2 and-5)1,'hav ing ahezilaigediorward end which slidablylfits in an aperture 83 of the housing head '40 of the box mar 19., freely through a suitable aperture 84 in the profiling tool slide 36 and is provided with a step or shoulder 85 which forms right angle flat faces on the rod and consequently a reduced portion for. a predetermined distance from the forward fiat endface of the rod. The extreme iorward end he r d .21s p ov d i at pe ed p A A a u ab en th w i h en s; e d e at t s t the lan .o rantee rms bmh r hqulsi a ax g e a ree the I 1 .9% 3? ward the plugcarried in the spindle head l0.E

i e l whieh r e dsthr eh th bore 51 of the screw fafi and intothebore of the b0 on v hes e h ad membe 14 b in onary head member! and the forward,

29 'oing into the path of the profiling diamond tool J I i 33 Min case a plug 14 is not held in the aligned the box tool I9 '50 that the nose piece tooperate thereon. Thereafter the sleeve 61 ismoyed rearwardly in the spindle 52 ,as the box,

Itfis desirable that no tool marks appear on the tively, and during the retraction or return stroke the" case of the profiling tool The forwardoend of the extends sh ulder 9J3 th eof engagin an adjustable ,bushe ing 9 Lthreaded intoan enlargement on thehouse. ins headllq oi t e. :box tool 11 9. At its refl therod 82 extends throughafriction devieeuni-e versally mounted, at its rear end on a stationary; part of, the screwmachine. The friction; device comprises an ,ape ltu ed block,92; mounted for uni-H versal movementbetween stationary 11lgS83e0f; thescrew machine, the rod 82 .having a sliding. fit in the block, and. freely extending through apertures in the lugs. The peripheryof 'therodi 81in the block 92 is engagedby an, adjustable; spring pressedshoe 94 to provide a suitablebrak-j ing, action on the rodwhich serves to .permita relative movement between the .tool slides. 35 and; 36 and the rod 32 at the beginningof theforward working and return strokes of the box tool 19,.

The operation of thehtool releasing means, as,- suming thatthe box tool l9 isvpartly advanced through its forwardworking stroke as shown in Fig. 2, is as follows At thispoint, in the ad Vance of the box tool [9 the rod 81 is causedvto advance therewith due to the bushingvfll, mov.-. able withthebox tool engagingthe shoulder 80 of therod 82, and consequently theifrictionroi the shoe 9 4 on the rod is overcome. Upon-come. pletion of the profilingoperation on the portioni 48,91? thep lug ll the cam rider is movednolit v wardly relative to the axis of the profiling, camlfla This occurs when point 9|;(Fig.- 1) onthecon-l centric outer surface of the cam 4 9 moves. into. engagement with the cam rider, the cam being. rotatedin thedirectionoi the'arrow. The move-U ment or the cam rider 50,; it will; be apparent.)

moves the slideBB andthereby, withdraws, the:v

up n mn onfoime profil n op ra ion of. the

tool 33 is shown in Fig. 3, This figure also shows,

the-relative positions of the tool slide 35 andvthei, rod 82 upon completion of thepperation of the,

tool i a v The box tooiyl fl continues its forward stroke;

until the diamond tool 32 completes its operation on thestraight sleeve portion 4| of the plug and then begins. Asthe boxtoolu l9 movesrearwardly, therod 82 (Fig.3) is held,

the return stroke stationary by the iriction shoe 54- until the space; between ;the inner end wallof the depression the tool slide 35;carrying the tool 32 and the forward fiat end face of the rod is closed ast is shown in Fig, 4. Immediately upon the box;

tool l9 starting its rearward or return movement the tool slide 35' is moved outwardly; fromthe axisjof the plug [4 due; tothe cam face 89 thereof riding, into engagement with the cam face 86: 0f ha od 8 e dl on e u n y amo di o 32 carried bytheslide is withdrawn from en-; gagement with the portion 4110f theplug. With heielesipen the-sm le 'h twe nstnemn rencx;

wall of the depression in the tool-slide 35' and the forward fiat end face of the rod 82 a similar space (Fig. 4) is provided betweenthe shoulder 90"of the rod and the'bushing 9!. Also it will be observed that the shoulder 85 of the rod 82 has been moved forwardly relative to the tool slide 35 'so that the larger diameter of the rod 82 is. positioned inside the aperture 84 of the tool slide. During the rearwardmovement of the box tool I9 the profiling cam 49, it wil be'understood, will be rotated in the opposite direction to that indicated by'the arrow in Fig. 1 due to the rearward movement of the screw 56 in the stationary. nut 60. The profiling cam face of the cam 49 will consequently be rotated past the cam rider-I50, the concentricouter surface of the'cam at the point 9! moving away from the cam rider, but due' to the position of the shoulder 85 of the rod 82 which is at this time inside the aperture of the tool slide 39' the tool slide will move inwardly only a slight distance and engage the larger diameter of the rod, as is clearly shown inFig. 4. In this last position of the tool slide 36 the diamond tool 33 will still be held out of engagement with the profiled portion 48 'of the plug I4. Thetool-slides 32 and 33 and the rod 82 maintaintheir relative positions, as shown in Fig. 4, during the return stroke of the box tool I9 until the cam'rider 50 engages point 98 (Fig. 1) of the concentric outer surface of the cam 49 at the end of the stroke whereupon the tool slide 36 ismoved outwardly a slight dis-- tance fromthe larger diameter of the rod 82. Upon the box tool 19 again moving forwardly to operate on the next plug I4 indexed into position the rod 82 is held stationary by the fric' tion shoe 94 until the space between the shoulder 85 and the bushing 9| is closed, as shown in Fig. 2, the tool slides 35 and 39 and the rod then moving inwardly to carry the diamond tools 32 and 33, respectively, into operative position for' operating on the plug I4 in the further advance ofthe box tool I9. As hereinbefore described the inward movement of the tool slide slide 35 is limited by the adjustable stop which determines the depth of out on the sleeve portion 4| f the plugand the profiling movement of the tool slide 36 is determined by the peripheral cam face of the rotating cam 49 riding on the cam rider 50 fixedto the slide 36.

In order to prevent the production of defective parts and eliminate damage to'the above described forming toolsby their engagement with oversize or defective partially formed plugs, mechanism is provided forautomatically stopping the machine when a defective or oversize partially formed plug is indexed to the working position of the forming tools. This mechanism includes a gauge or pivoted member I00 positioned to be actuated by defective or oversize plugs while being indexed to the working position of the forming tools. The pivoted gauge member Wit-comprises a pair of jaw members NH and I02 constructed I and arranged to provide an opening I03 there- H3 are relieved orshaped as indicatedin dotted outline in Fig. 8 to provide a mouth I04 to facilitate entrance of the plug into the gauge opening H3. The jaw members IOI and I92 are horizontally pivoted as indicated at I05 (Fig. 8) to a bifurcated upper end of a member I08 provided with a shouldered stem I09 vertically pivoted and freely slidable in a shouldered aperture II 0 of an irregular shaped bearing block I II clamped to a stationary rod II2 of the machine. A compression spring II 4 positioned between the jaw members I 0| and I02 at the right side of the pivot I05 thereof (Fig. 8) normally urges the jaw members toward each other, this movement being limited by an adjustable stop screw II5 threaded through the member IM and engaging the member I02. Abutting opposite faces of a shoulder provided along the aperture II9 of the block III and surrounding reduced portions of the stem I 09 of the member-E98 are compression springs II6, the opposite ends of the springs engaging a shoulder formed on the stem and an adjustable shouldered nut I I i screw threaded onto the lower end of the stem and freely slidable in the aperture Hi). It will be apparent that the gauge member I00 as a whole is free to swing in a horizontal direction about the axis of the stem I09 and is yieldably mounted for movement in a vertical direction along the aperture H0, its vertical movement being limited in opposite directions by the shoulder on the nut II! and the lower surface of the upper end of the member I08 engaging opposite ends of the bearing block III. The resistance of the gauge member I 00 to vertical movement on the block III it will be obvious may be adjusted by turning the nut II! on the stem I09. In addition the jaw members IOI and I92 may move about their pivot I05.

Pivoted, as indicated at I20, to the block II I' is a'bell crank lever I2I having a vertical arm thereof abutting the right side (Fig. 8) of an arm I22 of the member I08 and a horizontal arm pivoted to the upper end of a link I23, the lower end of the latter being pivoted to one end of a trip lever I24 pivoted at I21. The free end of the trip lever I24 normally engages a reduced shouldered portion I28 of a rod I29 mounted for reciprocable movement in bearings I30 provided on' the frame of the screw machine. Surrounding'the rod I29 between one of the bearings I30 and a collar I3I fixed to the rod is a compression spring I 34 which normally urges the rod I29 towards the right (Fig. 6), the rod being held from thus moving due to the engagement of the free end of the trip lever I24 in the shouldered portion I28 of the rod as shown in Figs. 6 and 7. A tension spring I35 (Fig. '7) attached to the horizontal arm of the bell crank lever IZI normally acts to hold the trip lever I24 in holding position relative to the rod I29, and an adjustable stop screw I36 threaded into the horizontal arm of the bell crank lever' I2I and abutting a stationary surface (Fig. 7) provides means for adjusting the sensitivity of engagement of the trip lever I24 with the shoulder I 28 of the rod I29. I

The right end of the rod I 29 (Fig. 6) extends across the front of a cam drum I 37, shown in broken lines. Fixed to the rod I29 in front of the cam drum I3! is a double ended arm I38 which normally is .positioned out of the path of a headed pin I4I reciprocably mounted in a bearing block I 42 attached to the peripheral surface of the cam drum. Adjacent the right end of the cam drum I31 is a clutch operating lever I43 suitably pivoted on the screw machine frame forward of the longitudinal axis of the rod I29. The upper end of the lever I43 at its rear side is operatively associatedwith a cone type friction clutch indicated in general at I04 (dotted outline Fig. 6') and the lower end of the-lever is provided with a curved rearwardly extending portion I 45 show upper end to actuatethe cone friction clutch I44,

thereby stopping, the screw machine. since the cam" drum I31 and clutch I44 are well known parts of conventional screw machines of thetype above referred to, it isbelieved that the schematic illustration thereof is sufficient to acomplete'understanding of the present inven, tion; f

A pivotal Lhandlever I48 is operatively 'conncted to'an' enlargement of the rod I29,. the lower endof the leverextendinginto a suitably shaped aperture I49, of the enlargement so that after an actuation of the stopmechanism to stop the screw I machine, the rod I29 maybe manually shifted to theleft .(Fig. 6). to reset the trip lever I24 in the shouldered portion I28 thereof. At this time the pin I4I is also manually shifted on the cam drum' I 31 ,to'its full line position. The lower end of the hand leven I48 engaging in the'aperture I'49of the enlargement ofthe rod I29 also serves to prevent the rod from rotating in its bearings I Conseduentlm} the arm I38 attached to the rod I29 will be held in a predetermined position relative tothe. path of the pin I4I revolving with the cam drum I3'I..

.Inthe operation of the screw machineand during the indexing of the partially formed plug I 4. to the next operating position or forming tools, in the present instance, the box tool I9, the portion of the plug extending from the chuck I2 will pass through the previously described opening I03 of the gauge I00 if the plugis not defective as to size and contour and thereby not interrupt the operation of the machine. If one or more portions of the plug I4 are oversize, the plug will not pass freely through the gauge opening I03, and consequently the engagement of the moving plug with the gauge members Jill and I02 will rock their supportingmember I08 about its vertical pivot. The movement of the member I08 by means of the arm I22 thereof abutting the verticalar'm of the bell crank lever I2I withdraws the trip lever I24 from holding engagement with the shouldered portion I28 of the spring loaded rod I29 and the latter is projected toward the right (Fig. 6). At this instant if the pin I4I carried by'the rotating cam drum I31 is not in position tobe engaged by the double ended lever I38 the movement of the rod I29 will be limited by'the lever engaging the adjacent bearing I30 and immediately thereafter the pin I4I rotating with the" cam drum is revolved into engagement withthe upper curved end of the lever I38and thereby moved. longitudinally toward the right in its bearing block I42, theright end of the pin then being positioned in the path of the curved rearwardly extending portion I45, which is shown in dotted lines in Fig. 6, of theclutch operating lever, I43. When this longitudinal movement of the pin I4I occurs, the pinis only slightly spaced from the portion I45 of the lever I43 so that it instantlyengages the lever and rocksit about its pivot, whereby the upper end of the lever actuates the cone friction clutch I44to stop the machine.

In case'the plug I4 is only slightly oversize but still within a permissible limit, the jaw members IOI and I92 will yield and move about their pivotl 105. to) perr'nit the assages; tnej riii e o the forming tools withoutinterrupting theoperation of. themachinel Furthermore, the yield: able 'mountin'gin' a yieldable} mounting-ma verticalfclirection of the stem. I09 I or the supporting member, D8 which carries the jaw1-memb,ers.-IIII and Immerses thejaw members-tomoyebodily in a .vertical Tdirection so that he g uge will automatically adjust itself to tne individua po.-. siti'on of the plug 14 which may vary due to usuallslight variations in the positions of the work' holding spindles and chucks. i i i I .It is believed that-the operationa f t j above describedrapparat s emb dy'ng thereat l of t ee i m wil he; learl 'derstood from the above detailed description. It 7 is obvious, oi course that the novel features of e e n ar no it d totheisnecific applications thereof herein illustrated and e,-

sc t 'dk but may be a j num rou other applications within thescope of the appended What is claimed isz 7 I 1. In an article i rming apparatus-a forming tool, meansfor moving an article intooperative relation with respect to said tool, and means ins eluding spaced members between which-.I,.sa.id article is moved positioned in advance ofgsaid tool andpnder the control of said article during its;movement-towards said tool for controlling the operation of said tool.

In. an article forming apparatus, aforming tool, means for intermittently advancing. success ive articles into operative relation withdrespect to'said tool, and'means includingspaced. members between which said articles are moved positioned in advance of said tool and .undergthe control of *the articles during their respective advancements toward the tool forcon'trollingl. 4.

the operation of. the tool.

3.;In an article formingapparatuspa 'forming tool, clutch forpcontrolling the operation 0: said tool, means for moving anlarticle into operative relation with respectntoflsaid' toolfland means including spaced members between which said article is moved positionedin advance of said tool and responsive to a dimension of said arti'cle during its movement towards said toolfor con trolling said clutch. i

4. In an article forming apparatus, a fotriming' tool, means for advancing articles succes'sively into operative relation withrrespect 'tdsaidftoOl', and a gauge member positioned in advance of said tool and in the path oflmovement of said articles and responsive toi a dimension of the articles during their movements towards said tool for controlling the operation of said tool when said dimension is abnormal and ineffective to control :the operation of'saidltool when said dimension is normal. I I r I 5. In @an article forming apparatus' 'article forming means, means for moving succssiveflar ticles into operative relationiwith respect to said forming means, and control. means including 7 spaced members between which. said articles are moved positioned. in advance of said forming" means and in'the path of movement of said articles for controlling the, operation of saidforrning eans, said control means being renderedef fective only by articlesdiffering from a predetermined standard for preventing the operation of said forming means. thereon. 1

6. In an article forming apparatus, article forming means, means for moving successive articles into operative relation with respect to I mined size without said forming means, a gauge member positioned in the path of the moving articles and having an opening therein for permitting the free passage therethrough of articles of a predetermined size and contour, and means actuated by the gauge member upon the engagement therewith of an article of difierent size or contour for interrupting the operation of the forming means.

7. In an article forming apparatus, article forming means, means for moving successive articles into operative relation with respect to said forming means, a gauge member pivotally mounted in the path of movement of said articles, said gauge member having an opening for the passage therethrough of. articles of a predetermoving the gauge member but preventing the passage therethrough of articlesof a diiferent size and contour, whereby continued movement of such articles moves the gauge member about its pivot, and means responsive to said movement of the gauge member for interrupting the operation of the forming means.

8. In a multiple spindle screw machine, the combination with article forming means, a plu- I. rality of article holding spindles and means for slidably mounted on the successively indexing said spindles into operative relation with respectto said forming means, of means including spaced pivotal elements between which said articles are moved positioned in advance of said forming means in the path of articles during their advancement by the spindles toward the forming means for controlling the operation of the forming means. 9. In an article forming apparatus, relatively Y rotatable'and longitudinally movable article and tool supporting members, a tool carried by the tool supporting member and movable therein radially oi. the article supporting member, a rotatable cam for controlling the radial movement of the tool, a stationary element coaxial with said cam, and means operatively associated with said stationary element and responsive to a relative longitudinal movement of the article and tool supporting members for imparting a rotary motion to the cam.

10. In an article forming apparatus, means for supporting and rotating an article, a forming tool carrier mounted for longitudinal movement toward and away from the article, a forming tool carrier for movement radially of the article, a rotatable cam for controlling the radial movement of the forming tool, a stationary element coaxial with said cam, and means operatively associated with said stationary element and responsive to a longitudinal movement of the carrier for imparting a rotary motion to the cam.

11. In an article forming apparatus, means for supporting and rotating an article, a tool carrier movable longitudinally of the axis of. rotation of the article, a tool mounted on the carrier for movement radially of the article, means including a rotary element for imparting a radial movement to the tool, a stationary element coaxial with said a rotary element and means operatively associated ole, means for moving the tool in one direction longitudinally of the article and simultaneously imparting a movement of the tool radially of the article into operative engagement therewith, and means for moving the tool radially of the article to disengage it from the article upon the completion of the forming operation and for holding said tool out of engagement with the article during the return longitudinal movement of the tool.

13. In an article forming apparatus, means for supporting and rotating an article, a tool carrying slide, means for advancing the slide longitudinally of the axis of rotation of the article, a tool carried by the slide, a stationary threaded element, and rotatable means having a threaded portion engaging the stationary threaded element and movable with the tool slide during its advance movement and responsive solely to said movement for imparting a predetermined lateral movement to the tool simultaneously with its advance movement to profile the article.

14. In an article forming apparatus, means for supporting and continuously rotating an article, a tool holder, a forming tool thereon, means for supporting the tool holder for reciprocation laterally of the article,'means for advancing the supporting means longitudinally of the article, means for simultaneously effecting a reciprocable lateral movement to the tool holder upon the supporting means during its advance to cause an operative engagement of the tool with the peripheral surface of the article for predeterminedly profiling the same, said means comprising a cam rider fixed to the tool holder, a cam rotatably'mounted on the supporting means and engaging the cam rider, a stationary element having a screw threaded aperture, and a screw threaded member operatively engaging in the aperture of the stationary element and connected to the cam, said stationary element and screw threaded member cooperating in response to a longitudinal movement of the tool supporting means for imparting a rotary motion to the cam.

15. In an article forming apparatus, means for supporting and rotating an article, a forming tool, a carrier for said tool, means for supporting and moving said carrier with said tool longitudinally of the article and simultaneously imparting a movement of the tool on the carrier radially of the article into operative engagement therewith, means carried by said tool carrier for axially engaging the article to support the same during the operation of said tool thereon, and means for mounting said tool carrier on its supporting and moving means so that the carrier may freely move in response to slight inaccuracies in the position of the article when said article supporting means on said tool carrier engages an article, whereby said tool is constantly maintained in a predetermined working alinement with the article during the working thereof.

16. In an article forming apparatus, a forming tool, means for moving an article into operative relation with respect to said tool, and means including a pair of pivotal spring pressed jaws normally spaced a predetermined distance apart between which said article is moved, said jaws positioned in advance of said tool and under the control of said article during its said movement towards said tool ior controlling the operation of said tool.

KASPER F. MOLLER 

